HTTP Interface client handles query param with ":"

Closes gh-34364

Author: rstoyanchev

spring-web/src/main/java/org/springframework/web/service/invoker/HttpRequestValues.java

@@ -493,7 +493,7 @@ private String appendQueryParams(
 
 			UriComponentsBuilder uriComponentsBuilder = UriComponentsBuilder.fromUriString(uriTemplate);
 			for (Map.Entry<String, List<String>> entry : requestParams.entrySet()) {
-				String nameVar = entry.getKey();
+				String nameVar = entry.getKey().replace(":", "%3A"); // suppress treatment as regex
 				uriVars.put(nameVar, entry.getKey());
 				for (int j = 0; j < entry.getValue().size(); j++) {
 					String valueVar = nameVar + "[" + j + "]";

spring-web/src/test/java/org/springframework/web/service/invoker/HttpRequestValuesTests.java

@@ -99,6 +99,24 @@ void queryParamsWithUriTemplate() {
 				.isEqualTo("/path?param1=1st%20value&param2=2nd%20value%20A&param2=2nd%20value%20B");
 	}
 
+	@Test // gh-34364
+	void queryParamWithSemicolon() {
+		HttpRequestValues requestValues = HttpRequestValues.builder().setHttpMethod(HttpMethod.POST)
+				.setUriTemplate("/path")
+				.addRequestParameter("userId:eq", "test value")
+				.build();
+
+		String uriTemplate = requestValues.getUriTemplate();
+		assertThat(uriTemplate).isEqualTo("/path?{userId%3Aeq}={userId%3Aeq[0]}");
+
+		URI uri = UriComponentsBuilder.fromUriString(uriTemplate)
+				.encode()
+				.build(requestValues.getUriVariables());
+
+		assertThat(uri.toString())
+				.isEqualTo("/path?userId%3Aeq=test%20value");
+	}
+
 	@Test
 	void queryParamsWithPreparedUri() {